900 MHz Relay

The ZADSR41DPDTProXR_XSC 900 MHz Relay will allow you to wirelessly control the relays using a 900 MHz frequency band. The board uses a
modem connected to the USB port of your computer to wirelessly communicate to the board. The modem mounts as a COM port on your PC, send
your commands to the COM port and the modem wirelessly sends the command to the board. That's all there is to it!!!

ZADSR41DPDTProXR_XSC The Ideal Choice

The ZADSR41DPDTProXR_XSC 900 MHz Relay is an ideal choice for applications that require fast, reliable wireless relay control using a
computer. The 900 MHz frequency allows for better communication through walls and obstructions. While line-of-site is
always vital for optimal range the 900MHz frequency is the best option when obstructions are unavoidable.

900 MHz Relay - ProXR

This is a ProXR board meaning that it has the industry leading command set and the board can be expanded to include up to 256 relays.
Adding relays is as easy as adding expansion boards as your needs arise.

Wireless Range

900 MHz boards operate reliably and efficiently when the antennas can “see“ each other. Obstructions like walls, buildings and even trees and hills can diminish the signal or prevent communication altogether. Metal being the worst for any wireless signal to penetrate with stone and brick and being a close second. Positioning the antennas for line-of-site operation will greatly increase reliability.

Long Range Wireless

XBee-PRO 900HP embedded modules provide best-in-class range wireless connectivity to devices. They are easy to setup and use, reliable and capable of transmitting a ling distance. You will need an 900MHz modem that plugs into your USB port of your computer to talk any number of boards with a standard range of 2-miles and up to 15 miles. You can choose the distance of the module installed at checkout.

Line-Of-Site Operation

As with any wireless technologies, for optimal performance it needs to be line-of-sight. In other words the antennas of the board and modem must "see" each other to get the optimal range or even be able to communicate at all. Mounting slots on the modem make it easy to attach to a wall to allow for line-of-site operation.

XBee-PRO 900 RF Module

This board is equipped with an 900HP Module. The XBee-PRO 900 RF module is ideally suited for less power-hungry, low-latency point-to-multipoint networking applications. Capable of point-to-point, peer-to-peer and point-to-multipoint networking, The XBee-900 modules have a higher selectable transmitting power of 250mW. This higher TX power allows for line-of-sight range up to 28 miles with the right antenna. It is ideal for solutions where RF penetration and absolute transmission distance are paramount to the application.

Standard Range Antenna

The XSC900SR Standard Range Antenna (distance of 2 miles) is included with the price of the controller. The included antenna is a 6" whip antenna with an RP-SMA threaded connection. The antenna will screw directly onto the wireless module.

900MHz Wireless Modem

Plug the UXSCMSR_ZIGMO short range modem or UXSCMLR_ZIGMO long range modem into the USB Port of your computer. The modem will mount as a COM port on your PC. Open the COM port and start sending data to the modem. The modem will forward your data to all Wireless XSC compliant devices within range (it is also possible to speak to a specific device when other controllers are in range). The modem is also available at checkout.XSC Modem

Sending Commands

Base Station Software is available at no charge to get you up and running fast (more on Base Station below). Once powered up, the controller waits for a ProXR command. A command consists of a few bytes of data in numerical format usually between 2 and 6 bytes. Once the command has been received, the controller processes the command, and sends you back ASCII character code 85 to signal the completion of your command.

Induction Suppression

Perhaps the most overlooked aspect of relay control is proper handling of inductive loads. Inductive loads can best be defined as anything with a magnetic coil, such as a motor, solenoid, or a transformer. Controlling a inductive load using this relay controller requires the use of induction suppression capacitors. The purpose of this capacitor is to absorb the high voltages generated by inductive loads, blocking them from the contacts of the relay. Without this capacitor, the lifespan of the relay will be greatly reduced. Induction can be so severe that it electrically interferes with the microprocessor logic of our controllers, causing relay banks to shut themselves down unexpectedly. In the case of Ethernet devices, customers may experience loss of communications until the device is reconnected. Capacitors that we offer are available at checkout, for more information view our Induction Suppression Video.

900 MHz Relay Videos

ProXR Relay

We've looked at the interface now let's take a look at the board design and programming. The ProXR series controllers are manufactured by hand for a highly accurate and reliable design. Equipped with the XR Expansion Port additional relays can be easily added. Fully tested before they leave the production facility each ProXR controller is ready to stand up to rigorous demands from heat, cold or vibration. The best test of all is the numerous boards in the field from customers all over the world in all sorts of conditions. Take it from us, these controllers will hold up!

Easy Software Development

Most of our customers write their own program for controlling these devices. Since you can use almost any programming language, you can use one that is most familiar to you so you don't have to learn a new language. These boards support the Serial Port Profile, meaning they will mount to the computer as a virtual com port. This makes it very easy to send commands to the device.

Plug-In for Visual Studio

The NCD Component Library is a plug-in for the Visual Studio 2005/2008 that greatly simplifies the communications to the NCD product line. The samples can be run in Visual Studio and full customization to your needs. Over 40 samples included with this free download! Component Library.

Base Station Software

Base Station will assist you in learning how this device functions and is the ultimate reference tool for setting up, testing and controlling this device. Base Station software supports every feature of this device - no other controller manufacturer even comes close to offering this type of software. Base Station works by communicating with your controller to identify the model and provides the appropriate graphical user interface for setting up and testing the identified device. To help you get started and learn this controller Quick Start Guides are available for just about every feature. As you discover a feature in Base Station a link is provided where you can easily download the Quick Start Guide.

UXP Expansion

UXP is a new standardized data port, specifically for the purpose of speaking to various expansion modules. If the controller you are considering is equipped with a UXP port, you can take advantage of extended commands to speak to our growing line of I/O expansion modules. You will find the UXP port on models with UXP in the part number.

Summary of UXP Modules

Compatible with UXP Series Controllers ONLY

Not a stand-alone controller - MUST be used with a UXP Series Controller

UXP Expansion Modules

UXP Expansion Boards have no on-board brains. They are entirely reliant on the brains of a "master" device. A master device is an NCD controller with a UXP expansion port and a microprocessor of some kind. Most master UXP devices have on-board relays. If you need to add A/D, Contact Closure Inputs or Digital Potentiometers just plug in the appropriate expansion module. You cannot daisy chain different types of modules to the same controller however. In other words if you plug in a potentiometer you will not be able to plug a contact closure or A/D module also. For controllers that are equipped with a UXP Expansion port (and are suitable master devices for UXP Series Expansion) simply look for UXP in the part number. All UXP Expansion Modules have an input and an output so you can simply daisy chain the boards together until you reach the number of contacts you are looking for.

XR Expansion Port

Most UXP controllers (Master Devices) have an XR expansion port and therefore can accommodate XR Expansion Boards. Typically the XR Expansion port is used to add relays to the main controller (Master Device). Like the UXP Expansion boards the XR Expansion Boards have no on-board brains. They are entirely reliant on the brains of a "master" device. When you run out of relays, just plug in an XR expansion board that is equipped with the kind of relays you need. You can add up to 256 relays including the relays that are on the main controller (Master Device). All XR Expansion modules are compatible with each other so if you want to add different types of relays you can. For controllers that are equipped with an XR Expansion port (and are suitable master devices for XR Series Expansion Controllers) simply look for PROXR in the part number.

Using XR and UXP Together

If you select a board that is equipped with both XR and UXP port you can use both ports simultaneously. This allows you to add and control more relays through the XR port plus add A/D, Contact Closures or Potentiometers to the same board through the UXP port. This can all be controlled through the same virtual COM port on your computer. These Expansion Boards can be purchase with the controller or purchased at a later time when you have a need to expand. To use both ports together you will need to select a controller that has UXP and PROXR in the part number to have bothports available on the controller (Master Device).

ProXR Enhanced Firmware Installed

This board has ProXR Firmware installed that responds to the full ProXR Command Set. The ProXR Firmware is the industry leading firmware for controlling relays with more commands and functionality than any other board on the market. The list of commands and parameters this board is capable of is extensive. ProXR Enhanced is the newly released enhance version of the ProXR Firmware with more commands, more functionality and better control than ever before! For a detailed list of all the commands with descriptions see our ProXR Enhanced Command Set.

Essential Power Requirements

Applying Good clean power to the board is essential for the operation of the board. Not only for the switching of the relays but the firmware that processes the commands. Without good steady clean power from a regulated power supply the board simply will not function correctly. All boards on the site require 12 VDC power. The PWR12 US power supply is a 120VAC to 12VDC 1.25A 60Hz regulated power supply and it plugs into the barrel connector on the board. The output connector is a 2.1mm I.D. x 5.5mm O.D. x 9.5mm Female R/A barrel connector. We also carry an international power supply with interchangeable adapters for international customers. Learn More

DPDT Relays Installed

This board has DPDT relays installed. A single DPDT relay is made up of 2 SPDT switches. Each relay acts as two switches that are activated at the same time. This allows two independent signals to be switched at one time. In effect, there are two independent switches on a single DPDT relay - they will always switch together.

There are two connectors with Normally Open, Normally Closed and Common for each relay allowing two separate connections. The picture above shows the 4-channel connectors. The diagram to the right shows the how the arms of the common connector swing from the Normally Closed to the Normally Open positions when energized. Wiring to either the NO or NC can produce your desired results.

2-Million Cycles

ProXR series controllers are designed for long life, you should expect to get years of service from your controller and literally 2-million cycles from the relays on board. With a 5-year warranty and a money back guarantee you have nothing to loose! Place your order now, while everything is in front of you.

RoHS Compliant

This board is led free and RoHS Compliant. If your requirements are for RoHS compliant parts this board is manufactured with RoHS compliant led free parts and solder.

Add Relays as Your Needs Grow

The ProXR series controllers are expandable up to 256 total relays. The controller is fitted with an XR Expansion Port where you can add expansion boards to this relay. Expansion boards can be added until you reach 256 total relays. The Expansion Boards get their logic from the main board and will require 12 VDC power. Expansion boards do not need to be the same relay amperage as the main board or other expansion boards.

16 User-Programmable Timers

The ProXR Series controllers have 16 user-programmable timers. Each independent timer can be assigned to any relay, and can be programmed to hold the relay in the On state, or to pulse the relay at the end of the timer. The ProXR timing features are ideally suited for Watchdog, Keep Alive, and Server Reboot applications, as well as sprinkler systems, gate openers, and lighting applications. Relay Timing Features support two modes of operation: Duration and Pulse. Duration timing is ideally suited where a device should be activated for a period of time. Pulse timing mode is designed specifically for server reboot applications, whereby, if the timer is not reset periodically by your software, the timer will run out and reboot your computer.

5-Year Warranty/Money Back Guarantee

ProXR Lite series controllers are guaranteed against manufacturing and functionality defects for a full 5 years! Not to mention a 30-day money back guarantee! If for any reason you are not happy with a relay purchased from Relay Pros, simply return it within 30 days and we will give you your money back! Controllers that are damaged by our customers will not of course be warranted under any circumstances.

Shipping

The boards sold are brand new units shipped from our office conveniently located in Missouri. These boards are completely tested before they are released for shipping With so many boards on our site it is impossible to stock boards, please allow two to three days production time for your order to ship. If you have any questions please feel free to call our office at 800-960-4287 or e-mail us at sales@relaypros.com.

ProXR with UXP Control Is Here!

A more streamlined manufacturing process brings a more durable, reliable and better relay board to the market. Here's a lists of great features:

ProXR Videos

Power Supply Available

The PWR12 is regulated power supply providing clean power necessary for
the performance of these boards. The PWR12 US power supply is a 120VAC to 12VDC 1.25A 60Hz regulated
power supply and it plugs into the barrel connector on the board. The output connector is a 2.1mm I.D. x 5.5mm
O.D. x 9.5mm R/A barrel connector.
Click Here for More

Wireless Modem

The XBP24-AUI-EXT_ZIGMO modem is required. It plugs into the UPS port on your PC and will mount as a COM port. Next, send commands to the COM port as
and the modem will forward the commands wirelessly to the board!. That's all there is to it!!! It is possible to communicate to many 802.15.4 devices within range.
This modem is Powered by the USB Port and includes USB Cable and Enclosure.
Click Here for More

Induction Suppression

Controlling
an inductive load using our relay controllers requires the use of induction suppression capacitors. The purpose of this capacitor
is to absorb the high voltages generated by inductive loads, blocking them from the contacts of the relay. Without this capacitor,
the lifespan of the relay will be greatly reduced. Induction can be so severe that it electrically interferes with the microprocessor
logic of our controllers, causing relay banks to shut themselves down unexpectedly.
Click Here for More

N-Button Lite

N-Button
Lite is software that allows you to configure buttons to control relays and read the status of those relays without programming. You
can also create meters for reading variable input sensors connected to the board in real time!

Relay Timer R4X

Relay Timer
Software allows you control each relay independently from a time schedule you create! The software can be installed on a server or PC and uses the
computers time for an accurate relay control. Enter the board's IP address in the software and access it over the network.
Change and override the time schedule from anywhere on the network the software is loaded. Look for Relay Timer R4X during checkout.

Quick Timer R4X

QUICKTIMER_R4X Software
supports turning on/off each relay automatically during the predetermined duration. First set the duration that you want the sequence to be active.
Time periods can then be set where the relay is energized within the set duration. Look for Quick Timer R4X during checkout.

Software Options

Not a programmer and think these boards look great, not to worry we have software to help get you connected and even control the relays with a button on your desktop or by a time schedule!

Base Station

Free Software for Board Connection

Base Station Software is our reference tool for designing and testing all currently manufactured NCD Devices. Base Station will assist you in learning how any NCD device functions and will provide valuable diagnostic tools to help determine if your controller is functioning as designed. Base Station software exercises every supported feature of every supported device. It is the ultimate reference tool for learning, diagnosing, and testing NCD devices.

Board Identification

A window will open labeled "Device Identification Data". This window contains important "Read-Only" information about your device. Note the "Documentation Related to this Controller" field. This is a compilation of all articles relevant to your device. Click on an item in the list to view. You will need an Internet connection to access this information.

Board Command Sets

Base Station software asks the controller which command sets are supported. The supported command sets are listed when you run the Base Station software application. Some controllers may show more command sets while other controllers may show fewer command sets. The Base Station program will decide which command sets apply to your particular controller. This allows our software to scale with the product line.

N-Button Software

Point-And-Click Software

N-Button is software that allows you to configure buttons to control relays and read the status of those relays without programming using point-and-click action. You can also create meters for reading variable input sensors connected to the board in real time!

USB and Network Compatible

N-Button Lite supports Serial Port/ USB and Network connection between the PC and the relay board. Add any type of included N-Button Lite widgets with N-Button Lite Manager. It's also very easy to modify the widget's properties to get the button and configuration you are looking for using the full command set!

Lite vs. Pro

N-Button Lite has all the buttons and widgets of the full version but is limited to 16 widgets. Created for users with smaller needs to save money, N-Button Lite is a powerful tool for controlling relays or reading A/D inputs with up to 16 widgets. If you want to add more than 16 widgets, a Pro version is available and supports up to 255 widgets.

Create Desktop Meters

Desktop Meters can be created for real time level readings of any variable input sensor. "It's like having a meter right on your desk for constant monitoring". Meters can be created for temperature sensors, moisture sensors, light meters and others. Read the sensor and create relay buttons that will allow at-a-glance determination of the relay status. Best of all the increments on the meter can be fully customized to fit your needs. Choose an Analog to Digital controller (look for AD in the part number) purchase a copy of N-Button or N-Button Lite and you can read the A/D levels right on your desktop! If you have an application where you need to track sensor levels you will have a live real time meter right on your desktop!
Visit our N-Button Page

Relay Timer

Time Schedule Control

Relay Timer Software allows you control each relay independently from a time schedule you create! The software can be installed on a server or PC and uses the computers time for an accurate relay control.

Control relay in recurrent time sequence

Thanks to protocol of ProXR & ProXR Lite boards it is possible to update 8 relays at one time. If speed is a requirement it only take about 30 ms to update 8 relays. In
multiple relay applications Relay Timer calculates all relays’ status together, even though each of them work separately.

Take Manual Control

You can take manual control of any relay at any time to interrupt the schedule and control a relay. Automatically switch back to Auto Mode and resume the schedule manually or set a fixed time to return to the schedule.

Quick Timer

Time Sequence Control

Quicktimer Software supports turning on/off each relay automatically during the predetermined duration. First set the duration that you want the sequence to be active. Time periods can then be set where the relay is energized within the set duration.

Control Relays by Time Duration

Quick Timer is a software program specifically developed for the relay boards on our site. The software will allow you to control the duration the relays will be energized. This software is not designed to control relay at a specific time of day but rather a time duration. The time sequence is manually started and can run through a set sequence and stop of be set to loop until manually stopped.

Control Within a Predetermined Duration

Quick Timer Software supports controlling each relay automatically during the predetermined duration. A duration can be set first then each relay on the board can then be controlled with their own time sequence within the set time duration.

Component Library

Visual Studio Samples

The NCD Component Library is a plug-in for the Visual Studio 2005/2008 that greatly simplifies the communications to the NCD product line. The samples can be run in Visual Studio and fully customizable to your needs. Over 40 fully functional fully working samples are included in this free download.

ProXR Quick Start Guide

Base Station Quick Start

1-Amp DPDT Data Sheet

900HP Module Data Sheet

Hardware Reference Guide

Our Story

At Relay Pros it's all about the switch! We use the best parts, the best firmware and the most comprehensive command set in the industry. Simply put, our boards will withstand the rigors of everyday use and the relays are rated for millions of cycles! Our boards are in use at many Fortune 500 companies today.